If is an imaginary cube root of unity, than value of the expression.
an ellipse, then a lies in
If is real and . Then triangle with vertices 0, z1 and z2 is
Reflection of the line in the real axis is
If A(z1), B(z2) and C(z3) are the vertices of a triangle such that
then area of the triangle whose vertices are z1, z2, z3 is